hirsch



a e h s w e e h S 4.. H D EB m T0 m G m V GA H R (-No Model.)

Patented Nov. 21, 1893.-

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(No Model.) 4Slieets-Shet 2.

F. HIRSUH 82; UTHIEDE.

ENGRAVING MACHINE Patented Nov. 21, 1893,

(No Model.) '4 ShetS-Sheet 3.

P. HIR SGH & C(THIEDE.

ENGRAVING MAUHINE.

No. 508,942. Patented N0v.'21 1893.

. No Model.) 4 Sheets-Sheet 4.

F; HIRSGH & 0, THIEDB ENGRAVING MACHINE.

No, 508,942. Patented Nov 21, 1893,

00 0.0 0 OO O O O O O always assume a certain ,UNITED STATES PATENT Drama.

FRIEDRICH HIRSOH AND OAR L THIEDE, OF BERLIN, GERMANY.

ENG'RAVING-MA'CHINE.

SPECIFICATION forming part of Letters Patent No. 508,942, dated November 21, 1893.

Application filed August 6, 1892.

To all whom it may concern.-

Be it known that we, FRIEDRICH HIRSOH and CARL THIEDE, subjects of the King of Prussia, and residents of Berlin, in the Kingdom of Prussia and German Empire, have invented certain new and useful Improvements in Carv-' ing'Machines, of which the following specification, taken in connection with the-accompanying drawings, which form a part thereof, is a full, clear, and exact descrip ion, such as will enable those skilled in the art to make and use the same.

Our invention, which relates to improvements on machines'for reproducing articles, has for its object to simplify their structure and thereby render them more economical of manufacture and more efficient and durable in operation. 7

Our invention embodies essentially a suitable framework for supporting the operative parts, a movable work-supporting-frame supporting the pattern and work-blanks, and a tool-carrying-frame supported above the work-supporting-frame and carrying a guiding, or shaping point and shaping tools which relation to each other.

Our improvements will first be described with particular reference to the accompanying drawings, and then the novel features 1 pointed out in the annexedclaims.

The drawings illustrate several embodiments of our ideas. However, the elements of machinery employed may be substantiated by many equivalents without deviating from the scope of the invention.

In said drawingsz-Figure l is an end elevation of our improved machine. Fig. 2 is a front elevation thereof. Fig. 3 is an enlarged side elevation of the work-supporting-frame and the clamping mechanism for engaging the work-pattern and blanks. Fig. et-isa top view of the same. Fig. 5 is an enlarged detail view of the operating mechanism for controlling the pattern and blank supportingframe. Fig. 6 is an enlarged detail side elevation representing the operation of the guiding and shaping tools upon the pattern and blanks. Figs. 7 and 8 represent a special mode of application of the new machine. Figs. 9 and 10 are detail views.

With the guiding tool A, Fig. 2, any number ofshaping-tools B (in the present case two areshown) may be rigidly connected in Serial No. 442.382. (No model.)

such a way, that the guiding tool is not movable in its socket, while the shaping tools are arranged to revolve around their longitudinal axes. This motion can be imparted to them by any suitable transmitting gear from any convenient source of power, (crankfor hand-power, or pulley for mechanical-power.) The guiding-tool as well as the shaping-tools can however, be adjusted lengthwise in their sockets, when this becomes necessary for any suitable reason. The work-supporting-plate C is connected with a rod "D (Figs. 1 and 2) by means of brackets E, which rod may be placed in line with the. center of the workplate, in line with its rear-edge. In the latter case the plate would be in suitable equilibrium and would have to be balanced by corresponding weights. The rod D is passed through eyes F, so that the work-plates O are capable of a laterally sliding motion on the frame. The eyes F are. fixed on a frame G (Figs. 2 and 6) which is pivotally connected to a second frame H at points J (Fig. '1). The frame H is hinged to the supporting frame at points K. The dotted linesin Fig. 1 indicate in what manner the above described parts can be oscillated and in what direction; Thus the work-plate O can be moved laterally and vertically, while at. the sametime it may be'turned with the'rod D which is loose in theeyes E.

The above device is balanced by weights M (Figs, 1 and 2) which can be adjusted on levers N. The ends of thelevers N are hinged one line, which is parallel to the rod D. The

position of pattern and work piecesshould of course also be corresponding to this line.

The fastening of the workpieces and the pattern upon the plate 0 produces a certain increase in the weight of theframe, which has to be balanced by adjusting the weights M on the levers N.

. has been in contact with the guiding tool. The work-blanks, being at the same time utilized to perform the same motions as the pattern, necessarily present to the shaping tools B, (which are revolving) corresponding parts. The tools B consequently cut away the corresponding parts of the material and have shaped the work-blank similar to the pattern,

thus producing a copy, which is extremely correct and neat. In order to clamp a work piece more securely and so as to enable it to be acted upon on all sides, that it may be better shaped, as this is impossible 011 the smooth work-plate, the latter is substituted bya bar U (Fig. 3) which is fixed to the rod D in the same manner as the work plate 0. This bar U is provided with the stationary dogs V each provided with the.center bits or teeth and the distance between them is made to correspond with the distance between the shaping tools and the guiding tool. Corresponding adj ustable dogs W are also provided each of which is formed with a suitable base fitting the bar U, and a vertical portion extending up from the base and having journaled in its upper end a set screw H. The bases of the adj ustable dogs are formed with socketsin the side flanges as-shown. Studs y are provided on the edges of the bar U for the sockets of the adjustable dogs to engage and allow the dogs to be adjusted to correspond to the length of the work-blank to be operated upon. The operation on the Work-blanks is effected exactly in the same manner as if they were attached flat upon the plate.

The devices so far illustrated allow us to obtain by the new duplicating apparatusatrue reproduction of the model. But We shall hereinafter describe a device by means of which va reversed copy of the pattern may be obtained.

The pattern R (Figs. 6and 7) would be exactly duplicated in T In T however, a reversed reproduction would be obtained being similar in all other respects. If the figure R is the pattern of aface looking to the right, the copy obtained in T would be the same, but the copy at T would be a face looking to the left. Two work-plates G and O are provided in this case (Fig. 7). A loop to surrounds the eye F, sliding on the rod D in such a way, that it can freely swing on it. The device in Figs. 6 and 7 is fastened on the rod D by means of the brackets E in the same manner as the work-plate O in Fig. 1. Two bars at (Fig. 8) are fixed to the bracket E between which the work-plate C is attached rigidly, while the work-plate C may be shifted laterally. The rear bar (1 carries a rack S, and a similar rack L is fastened to the work-plate O by means of straps 00.

Both racks gear into a pinion r pivoted on the loop it. This latter ends in two arms, carrying rolls u, intended to run on the bars d. By these means the gearing together of racks and pinion is made certain. If the plate 0 is moved laterally, the rack S is'pushed forward in the same direction. By means of the pinion r, however, the rack L Wlll be moved in the opposite direction. Thus the Work-piece T on plate 0 will move 111 the opposite direction, while the pattern R being fixed on plate 0 within the surface 1, 2, 3, 4 is guided for instance from left to right, and the work-piece T being on the same plate 0' within the surface 3, 4, 5, 6 will perform the same motion from left to right. Besides the guiding tool A, be1ng 1n the middle between B and B, a second guiding tool A would be employed 1n this case placed outside the middle between the tools B and B. The lateral displacement of both plates toward each other may of course be effected by any other similar mechanical elements, instead of the gears.

Having thus fully described our lnvent on, the following is what we claim as new thereln and desire to secure by Letters Patent:

1. In a carving machine the comb 1nat1on of a main frame, a frame secured to said main frame and supporting the stationary guidlng points and cutters carried thereby and a movable table carried by a suitable frame ad ustably secured to said main frame, substantially as described.

2. In a carving machine, the combination of the supporting frame, the guiding and shaping tools carried by said frame, and the movable counter-balanced frame carrying the pattern and blanks, adapted. to swlng in all directions to keep the pattern and blanks 1n working relation with the tools; substantially as and for the purpose set forth.

3. In a carving machine, the combination of a main supporting frame, vertically movable guide and cutting points mounted on said frame, and a sectional pivoted frame traveling under said guide and cutting points to carry the pattern and work blanks; substantially as described.

4. In a carving machine, the combination of the supporting frame, the guiding and shaping tools supported 011 said frame, the sectional pattern and work-carrying-frame, one of said sections carrying the pattern and blank or blanks to be operated upon, and the other of said sections carrying a blank or blanks, and means of moving the sections in opposite directions, whereby a true and reversed copy of the pattern is obtained; substantially as and for the purpose set forth.

In witness whereof we have hereunto set our hands in presence of two witnesses.

FRIEDRICH HIRSOH.

CARL THIEDE.

Witnesses:

PAUL FISCHER, PAUL BRINKMANN. 

